/* Yoshi's GPS Tracker — Shared Stylesheet */

:root {
  --primary:        #007AFF;
  --primary-dark:   #005ecb;
  --text:           #1d1d1f;
  --text-secondary: #6e6e73;
  --bg:             #ffffff;
  --bg-secondary:   #f5f5f7;
  --bg-card:        #ffffff;
  --border:         #d2d2d7;
  --shadow:         0 2px 12px rgba(0, 0, 0, 0.08);
  --radius:         12px;
  --radius-lg:      20px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
               "Yu Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ── */
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.02em; line-height: 1.25; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); margin-bottom: 0.5rem; }
h3 { font-size: 1.125rem; margin-bottom: 0.4rem; }
p  { color: var(--text-secondary); margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }
a  { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ── */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 80px 0;
}
.section + .section {
  border-top: 1px solid var(--border);
}
.section--gray {
  background: var(--bg-secondary);
}

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}
.site-header .logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-header .logo span.icon { font-size: 1.2rem; }
.site-header nav { display: flex; gap: 24px; }
.site-header nav a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.15s;
}
.site-header nav a:hover { color: var(--primary); text-decoration: none; }

/* ── Hero ── */
.hero {
  padding: 100px 0 80px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg) 100%);
}
.hero .badge {
  display: inline-block;
  background: rgba(0,122,255,0.1);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.app-store-cta {
  display: flex;
  justify-content: center;
  margin: 0 0 28px;
}
.app-store-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.app-store-badge:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
  text-decoration: none;
}
.app-store-badge img {
  display: block;
  height: 56px;
  width: auto;
}
.hero h1 { margin-bottom: 16px; color: var(--text); }
.hero .subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}
.hero .cta-group { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  text-decoration: none;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,0,0,0.12); text-decoration: none; }
.btn--primary { background: var(--primary); color: #fff; }
.btn--secondary { background: var(--bg-card); color: var(--text); border: 1px solid var(--border); }

/* ── Feature Grid ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.feature-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.feature-card .icon {
  font-size: 2rem;
  margin-bottom: 14px;
  display: block;
}
.feature-card h3 { color: var(--text); }
.feature-card p  { font-size: 0.9375rem; }

/* ── Steps ── */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; }
.step { text-align: center; }
.step .step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 1.125rem;
  margin-bottom: 14px;
}
.step h3 { color: var(--text); }

/* ── Compatibility ── */
.compat-list { list-style: none; display: flex; flex-wrap: wrap; gap: 12px; }
.compat-list li {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ── Legal pages ── */
.legal-hero {
  background: linear-gradient(150deg, #eef4ff 0%, var(--bg-secondary) 60%, var(--bg) 100%);
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--border);
}
.legal-hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  margin-bottom: 14px;
}
.legal-hero .meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 14px;
  margin-top: 6px;
}

/* Legal 2-column layout */
.legal-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 60px;
  align-items: start;
  padding: 64px 0;
}

/* Sticky TOC */
.legal-toc {
  position: sticky;
  top: 68px;
}
.legal-toc .toc-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 10px;
  display: block;
}
.legal-toc ol {
  list-style: none;
  padding: 0;
  border-left: 2px solid var(--border);
  padding-left: 16px;
}
.legal-toc li { margin-bottom: 2px; }
.legal-toc li a {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  padding: 4px 0;
  display: block;
  transition: color 0.15s;
  text-decoration: none;
  line-height: 1.4;
}
.legal-toc li a:hover { color: var(--primary); }
.legal-toc .toc-sep {
  margin: 10px 0;
  border: none;
  border-top: 1px dashed var(--border);
}

/* Legal content */
.legal-content { min-width: 0; }
.legal-body h2 {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text);
  margin: 52px 0 16px;
  padding: 10px 16px;
  background: var(--bg-secondary);
  border-left: 4px solid var(--primary);
  border-radius: 0 8px 8px 0;
}
.legal-body h2:first-of-type { margin-top: 0; }
.legal-body h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
  margin: 28px 0 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.legal-body h3::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 14px;
  background: var(--primary);
  border-radius: 2px;
  flex-shrink: 0;
}
.legal-body p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1rem;
}
.legal-body li {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 0.4rem;
}
.legal-body ul, .legal-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}
.legal-body strong { color: var(--text); }
.legal-body a { color: var(--primary); }

/* language divider */
.legal-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 64px 0;
}
.legal-divider::before,
.legal-divider::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--border);
}
.legal-divider-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  letter-spacing: 0.05em;
}

/* language header badge */
.lang-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 36px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.lang-flag {
  font-size: 1.5rem;
  line-height: 1;
}
.lang-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
}
.lang-name-sub {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-left: 4px;
}

/* mobile: hide TOC, single column */
@media (max-width: 720px) {
  .legal-layout {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 40px 0;
  }
  .legal-toc { display: none; }
}

/* ── Footer ── */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.site-footer .footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.site-footer .footer-links { display: flex; flex-wrap: wrap; gap: 20px; }
.site-footer .footer-links a { font-size: 0.875rem; color: var(--text-secondary); }
.site-footer .footer-links a:hover { color: var(--primary); }
.site-footer .copyright { font-size: 0.8125rem; color: var(--text-secondary); }
.bmac-section {
  text-align: center;
  padding: 20px 0 0;
  border-top: 1px solid var(--border);
  margin-top: 20px;
}
.bmac-section p {
  font-size: 0.875rem;
  margin-bottom: 12px;
}
.btn-bmac {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffdd00;
  color: #000;
  font-weight: 700;
  padding: 10px 24px;
  border-radius: 100px;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-bmac:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  text-decoration: none;
}
.site-footer .footer-legal {
  margin-top: 14px;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ── Language Switcher ── */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
}
.lang-switcher span { color: var(--border); font-size: 0.875rem; }
.lang-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px 10px;
  font-size: 0.8125rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.15s;
  font-family: inherit;
}
.lang-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.lang-btn:hover:not(.active) {
  color: var(--primary);
  border-color: var(--primary);
}

/* ── Story section ── */
.story-card {
  background: linear-gradient(135deg, #eef4ff 0%, var(--bg-secondary) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  max-width: 720px;
}
.story-icon { font-size: 2.5rem; flex-shrink: 0; line-height: 1; }
.story-card h3 { color: var(--text); margin-bottom: 8px; }
.story-card p { margin-bottom: 0; }
@media (max-width: 600px) {
  .story-card { padding: 24px 20px; flex-direction: column; gap: 12px; }
  .app-store-cta {
    margin-bottom: 24px;
    padding: 0 12px;
  }
  .app-store-badge img {
    height: 48px;
  }
}

/* ── Lang jump links (legal pages) ── */
.lang-jump {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.lang-jump a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px 12px;
  transition: all 0.15s;
  text-decoration: none;
}
.lang-jump a:hover {
  color: var(--primary);
  border-color: var(--primary);
  text-decoration: none;
}

/* ── Hamburger button ── */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  gap: 5px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.menu-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.is-open span:nth-child(2) { opacity: 0; }
.menu-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .hero    { padding: 70px 0 60px; }

  .menu-toggle { display: flex; }

  .site-header .container { height: 52px; }

  .site-header nav {
    display: none;
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0 16px;
    gap: 0;
    z-index: 99;
  }
  .site-header nav.is-open { display: flex; }

  .site-header nav a {
    padding: 12px 24px;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
  }

  .lang-switcher {
    margin: 12px 24px 0;
    justify-content: flex-start;
  }
}